Typewriting machine



Nov. 17, 1925- J. A. B. SMITH TYPEWRITING MACHINE Filed Oct, 20. 1923 2 Sheets-Sheet 2 a n. sn'rmor naman, '-oomcncn'r, Amazon 'ro Ulrnnwoon 'Inflwnrrgn conm, olnw ronx, r. Y., .a oonronnoir or nmwaan.

mamme-neme. l appiiaaenlieaomm so, ma. semi in. ceases.

' Toall wlwm it may concern: engages Va type4 of raekrod, which allows new and useful Improvements in Typewrit- 'i Other featiies and adv and other forms, -the first ent is typed close operating position,

Be itrknown that I, Jnssn A. B.. SMrrn, the margin-stop pawl to clip over the teeth a citizen of the United State residing in on the rack when the stop is uahed Aor Stamford, in the county of airfield and pulled to the` left toward a h' Iher scale- State`0f Connecticut, have invented certain position.

antages will hereing Machines, of which the following is a inafter appear. n specification. e accompanying drawings,

s invention relates totypewritershav- Figure 1 is a top plan view showin a g. ing letter-feeding platen-carriages, and morev portion of an Underwoodl typewriter with particularly to the mechanism which controls the invention attached thereto; the side margins on the work-sheets. Figure 2 is an end'view, partly in section,

4In making out bills bookkeeping accounts, showing the feed-roll mechanism in normal which is non-effective to the left-hand edge of -t e work-sheet. In' releasing the right-hand margin-stop. 70

l Following this, items areenerall .listed inv Figure 3. is a portion of a a column which is indent Ysome 4istance to partly in section, similar to Fi -the right of said first entry. ing the feed-roll release mec anism the first entry of .each succeeding bill or the riglht-hand margin-stop form. The usual4 feed-roll release-lever, with t disen' agement of the righthand marginwell-known oscillatin vment of the carriage with the feed-roll ren end view,

ure 2, showl posi- The typing of these items has usually retioned tothrow the feed-rolls off the platen, quired the return of the carriage to the and which at the same time disengages the right-hand margin-stop that was set for the Arigh-t-hand margin-release stop-pawl pre-f. first entry. This sto located the work-sheet paratory to shifting the same to a. lower some distance to the eft of the desired start-y scale-position. ing4 point, making it necessary to tabulate Figure 4 is a fragmentof a top from this point to the desired position. showing the margin-stop pawl dis A feature of the present'invention is the from the rack-rod. automatic restoration ofthe margin-sto to Figure 5 is a perspective view of the relocate the carriage in the right-han or feed-roll release-lever be `airing-shaft, and conlower position on the letter-feeding scale, for nections for the links to the feed-rolls and view, placed e parts separated. which the typist depresses to remove the D Referring to the drawings, a platen-carfinished work-sheet, is connected to cause riage, designatedas a whole as 10, is of the g type found on the stop rom its fixed adjustable position. Ac- Underwood typewriter. It has journaled cordingly, on the succeeding return movethereon a platen-axle 11 on which is mounted a,revoluble platen 12. The usual feed-rolllease-lever depressed, the margin-stop will releasing mechanism 13 co-operates with the 'x o r lower scale-position, to registerthe carthe platen l2.. The feed-roll- .return to normal position and again lockand carrying on t eir ends rod be carried back therewith to its right-hand platen 12 to hold a worksheet `12 against releasing mechriage Ain position ,for typing the first entry. anism 13v comprises a stationary su porting- YVhen the feed-roll release-lever is returned "rod 14 supported below the p aten 12. to its normal position, the margin-stop will 4Arms l15, extendin in 4opposite directions s 16, are

vitself'against movementto the right. After pivotally mounted on rod 14. Paper feed- 100 which will automatically return the margina rock-'shaft 20. The shaft 20 l vanced to the left during the typing of the.-

the Vfirst entry has been made, the typist may rolls-17 arefmounted on the rods 16. The 1 slide the margin-stop against a fixed collar arms 15 are engaged by springs 18 which on the margin-sto -rod in the usual manner, have a tendency to throw the rolls 17 'against n so that the succe ing return movements of the platen 12, or the work-piece 12*l thereon.

the carriage are arrested in the item position. The arms 15 are also provided with pro- 105 Preferably, however, a spring is provided jections or tappets 19 arranged to embrce is suita l stop to the fixed collar as the carriage is admounted (not shown) to swing' about thb. supporting-rod 14, and is provided with a first entry. The margin-stop pawl usually flattened or cam portion 21 arranged toen-.110

release, shownL S5 gage tappets 19.i

i Thus when the shaft 2O is will. be spread apart and feed-rollsV 17 will be thrown oii' the platen 12 to release thework` sheet 12?. The free end of the crankarm 22 is connected to the lower end of an upwardly-extendino link 23, the upper end of which is pivotally connected at 24 to a crank-arm 25. A short rock-shaft 26 rigidly supports crank-arm 25 and is journaled between a bracket 27,(projectng from the sides of the frame of carriage 10) and the frame of carriage 10, see Figures 1 and 5. The outer end of the shaft 26 has a feed-roll release or control lever 28 fastened thereto to operate the feed-roll-releasing mechanism 13 in the usual manner. So far as above dcscribed,l the structure is similar or equivalent to the well-known feed-roll-releasiug mechanism now' in general use on typewriters.

`My improvement consists in providing means operated simultaneously with the releasing of the feed-roll mechanism to disengage the right-hand margin-stop from its fixed adjustable position, so that it may be shifted back to a lower scale-position during the succeeding return movement of the carriage. This improved device may consist in providing an inner extension 29 on shaft 26, the free end of which has a stud 30 to which a crank-arm 31 is rigidly mounted. A forwardly-extending link 32 may connect the crank-arm 31 to aswingable cam-plate-supporting-frame 33. Frame 33 may have left and right, upstanding, forwardly-projecting members 37 and 38, which may be pivoted at 35 and 36, respectively, on depending supports 34. rlhe supports 34 may be mounted o'n the carriage in anyl suitable manner, as by means of screws 39. A. cam-plate 40 may be rigidly fastened to the vforwardlyprojecting ends of members 37 and 38. The forwardly-projecting portion of member 37 may be offset to the left so as not to interfere with the grasping of the upstanding, rigid finger 41, in the usual manner, when it is desired to return the carriage by means thereof. The cam-plate 40 may have' a front downwardly-sloping face 40a which" may bear 'against the upper end of an upstanding,

backwardly-extending pawl-finger 42. The finger 42 may form a part of a paWl-member 43 of a right-hand margin-stop 44. The pawl-member 43 is pivotally supported, in the usual manner, by a shouldered lscrew 45, and may have a forwardly-projecting handle 46 at its lower end. A grip piece 47 may be rigidly fastened to the margin-stop 44, Awhich, together with the handle 46, may formmeans for pivotally -swinging the` paWlmember 43 on screw 45 to disengage teeth 48 onthe pawl-member 43 from a stationary, carriage-supporting, rack-rod 49, to release the margin-stop 44 and facilitate the movement thereof; The rack-rod 49 has inclined scale-position. The margin-stop 44 may be slidingly mounted on a margin-stop rod 50, and may be llimited to -movements between adjustable collars 51 and 52 embracing rod 50. The collar 52 may have a supporting extension-piece 53, to which one end of a spring 54 is anchored. The other end of spring 54 may be fastened 'to the marginstop 44 on a projecting lug 55.

The margin-stop 44 has extending inwardly thereon the usual stop-plate 63, which is arranged to extend into the path of a downwardly-projecting stop-lug tened to the middle of the front side of the carriage frame 10. i

The carriage 10 is mounted to slide in the well-known manner on the carriage-supporting rack-rod 49 at the front ofV the platen 12 and on supporting rod 56 at the rear of the same. The usual letter-space indicating means may be provided, consisting of a scale 57, which is immovably mounted with its supporting bar 58 on the'machine in front of the platen-carriage 10, and a pointer 59 which is mounted on the carriage 10 to move across the-scale 57. The linespacing mechanism 60 may be mounted on the left-hand corner of the platen-frame .carriage 10 for use in the usual line-spacing and carriage-return movements.

There are several methods of operating a typewriter equipment with my limproved device to automatically shift the right-hand margin-stop 44 back to a lower scale-position, but in all cases it is necessary to hold the feed-roll release or control lever 28 depressed during the return movement of the carriage. The preferable method is as follows: Let it be assumed. that the typist has just finished typing work-sheet 12a, which has the first entry 61 and column-items 62 typed beneath the same to the right thereof, and that the margin-'stop 44 is up against collar 52 which gages the carriage 10 to the item-column position, as shown in Figure 1. The work-sheet 12a is now ready to be replaced by another similar Work-sheet requiring a first entry 61 thereon. Before the carriage 10 is given a return movement, the feed-roll release or control lever 28 is de- 64 fas? pressed in the usual manner, which causes the feed-rolls 17 to be thrown so as to release the work-sheet 12a from v.the platen 12, and the work-sheet 12?` may be removed from the machine. Depressing the feed-roll noted that crankz-arm 31V may i arrand to rock-.into an aligned position with e link 32 to assist in` locking the control-lever 28 in depressed position, as shown in Figure 3. .The Alinger 42 causes the lmargin-sto j paw143 .to swing on pivot-screw 45, so that the pawl-'teeth 48 are disengaged from rackrod 49. By pressing tothe right the. lever of the line-space mechanism 60 or the up- -standing rigid finger 41, the carriage 10 is movement of` the carriage.

. stp 44 back with the carriage-return'movement until the latter reaches the limiting collar 51. The collar 51 is adjusted to position the carriage for the lirst entry 61. The eed-rollrelease-lever 28, which is still -in its depressed condition, holds the cam-plate 40 to displace the pawl-Iinger 42, so that the margin-stop pawl 43 is kept out of engagement with the racka'od 49 during the return A new worksheet 12a may now be inserted and gaged between' the platen 12 andthe displaced.

feed-rolls l17, and the feed-roll release-lever 28 lifted to throvsT the feed-rolls 17 against the work-sheet '12 and the platen 12 in the'usual manner, as vshown 1n' Figure 2.

The new work-sheet 12a is now in proper position for typing the first entry thereon. 'ljhe lifting of the feed-roll release-lever 28 also releases the margin-stop pawl 43 to en-v,

gage the rack-'rod 49.

As the carriagemoves to the left after the first entry has been typed, the spring 54 right by the margin-sto automatically pulls along the margimstop 44 from the lowerf scaleosition until the limit-stopcollar 52 is reac ed, which marks the itembolumn osition. There the margin-stop 44 is held against movement to the pawl 43. Since the feed-roll-release mec anism is left undisturbed during the typing operation, the return movements of the carriage- 10 after the first entrv has been made mg in the item-column may be continued until the work-sheet 12*x is iinished, and the entire operation repeated on each new worksheet. Thus, tabulation from the Erst-entry.

column to the item-column is eliminated automatically shifting the margin-stop wit the succeeding carriage return, and-the marrst-entry position to the item-column position.

Variations may be resorted Vto within the scope of the invention, and portions of the improvements may be used without others.

position for for typing to the glu-stop is automatically reset fromthev lfiaving thus described my invention, I claim: l A l 1. In vcombination with a typewriting machine having a letter-feeding carriage, re-

p lleasablyadjustable means capable of either positioning the carriage'on a lower scale` typing near the left-ha}1d edge of a work-sheet or at a higher scaleposition for typing to the right of the first-mentionred position, and means to simultaneously release the work-sheet and the means when the latter is set at the higher Yscale-position, 'so that it may be automaticallyv shlfted with the ca-rriagebn-.its succeedingreturn movement to the lower scaleposition.

.2. In combination with a typewriting )machlne having a letter-feeding carriage, releas'ablyjadjustable means capable of (either positioning the carriage on a lower scaleposltlon for typing near the left-hand edge of a work-sheet or at a higher scale-position positioning tionedposition, means to simultaneously release the work-sheet and the positioning means when the latter l scale-position. so that it may be automatically shifted with the carriage on its succeed'- ing return movement to the lower scale-posi-2 tion, and meanslattached tothe positioning- 'means to automatically reset the same to the .higher scale-position after being shifted y therefrom.

In combination, chine having a carriage, means capale of eltherpositloning ,the carriage on a' lower scale-position for typing near the left-hand edge of a work-sheet or on a higher .scaleposition for typing to the right of-'the firstmentioned position, and means mounted on right of the first-meuis set at the higher in a typewritinvfm'athe carriage to release the positioning means when the same is set at the hij'gher scale` posltl'on,

sov that it may be automatically' shifted with the carriage on its succeedin?,r

return movement to the lower scale-position.

4. In a typewriting machine having a carnage, either positioning the carriage on a lower scale-position for typing near the left-hand edge of a work-sheet or on a higher scalewill be limited to the position of the item-column.

position for typing to the right of the firstmentioned pos1tion, means mounted on the carriage to release the .positioning means when the same is set position, so that it may be automatically the combination of means capable of:

at the higher scale# shifted with the carriage on its succeedingl 4 return movement to the lower scale-position, and means acting on the positioningl eans to automatically reset the same "to the higher scalesition after being shifted to the lower sca e-position.

5. In avtypewriting machine having a carriage, the combination ofadjustable means capable of either positioning thecarriage on a lower scale-position for typing near higher scale-position for typing to the right of the first-mentioned position, and means attached to the positioning means to auto-- matically shift the same in the direction of .carriage movement back to th'e higher scaleposition after being displaced therefrom.

6. In a typewriting machine having a carriage, thecombination of a margin-stop rod mounted on a relatively stationary part of the machine, a margin-stop having a pawl `forming `part thereof, shiftably mounted on said rod to position the carriage in its return movement, adjustable collars on said rod to gage and limit the margin-stop positions, a rack-rod )mounted parallel to the margin-stop rod arranged to be engaged by said pawl to adjustably set the margin-stop, and means on the carriage for disengaging said awl` from the rack-rod, so that the margin-stop will .be released to shift from an adjusted position on the return movement of the carriage.

7. In a typewriting machinehaving acarriage, the combination of a margin-stop rod mounted on a relatively stationary part 'if the machine, a margin-stop having a paal forming part thereof shiftable mounted on said rod to position the carriage in its return movement, .adjustable collars on said rod to gage and limit the margin-stop positions, a rack-rod mounted parallel to the margin-stop rod arranged to be engaged by said pawl to adjustably set the marginstop, a cam-plate mounted on and controlled from the carriage to displace said pawl from,

" engagement with the rack-rod, so that the margin-stopwill be released to shift from an adjusted position on the return movement of the carriage,and spring-means to automatically return the margin-stop lto the adjusted position after being shifted therefrom. l

' 8. In a typewriting machine having a carriage, the combination of a platen, feed-rolls to hold a work-sheet thereto, a margin-stop rod mounted on a relatively stationary part of the machine, a margin-stop having a pawl forming part thereofI shiftably mounted on said rod to position the carriage in its return movement, adjustable collars on said rod to gage and limit themargin-stop positions, a rack-rod mounted parallel to the margin-stop rod arranged to be engaged by 4 said pawl to adjustably set the margin-stop,

and a control mounted on the carriage to simultaneously throw the feed-rolls off .the platen for releasing the work-sheet and disengage the pawl from the rack-rod, so that the margin-stop will be released to shift from an adjusted position on the return.

movement of the carriage.

9. In a typewriting machine having a 'carriage, the combination of a platen, feedrolls riding on the pl'aten, a margin-stop rod mounted on. a. relatively stationary part of the machine, a margin-stop having a pawl forming part thereof shiftbly mounted on said rod to position the carriage in its return movement',V adjustable collars on said rod to gage and limit the margin-stop positions, a rack-rod mounted parallel to the margin-stop rod arranged tothe engaged by said pawl to adjustably set themargin-stop, and a cam-plate having a control lever -mounted on the carriage for displacing said so that the margin-stop Will be released to shiftfrom an adjusted position on the return movement of thel carriage; said control level' acting simultaneously to cause the camplate to/displace the pawl and to throw the feed-rolls olf the vplaten for releasing a work-sheet. l

lpawl from engagement with the rack-rod,

10. In a typewriting machine having a85 carriage on which a platen is mounted, the combination of feed-rolls riding on the platen to hold a Work-sheet thereto, a marginstop rod mounted on a relatively stationary part of the machine, a margin-stop having a mounted on said rod to position the carriage in its return movement, adjustable collars on said rod to gage and limit the marginstop positions, a rack-rod mounted parallel to the margin-stop rod arranged to be enga-ged by said pawl to adjustably set the margin-stop, a cam-plate having a control lever mounted on the carriage for displac- 'ing said pawl from engagement with the rack-rod, so that the margin-sto will be released to shift from an adjuste position on the return movement of the carriage ;'said control lever acting simultaneously to cause the cam-plate to displace the pawl and to throw the feed-rolls off` the platen for re-Y 11. In a typewriting machine having` a pawl forming part thereof shiftably carriage on which a platen is mounted, the

combination of means for holding a worksheet to the platen, a releasably-adjustable margin-stop to limit the return movement of the carriage, and a control to simultaneously release the holding means and the marginstop from an adjusted position, so that the latter may be shifted with the carriage 'on its return movement;

12. In a typewriting machine having a carriageA on which a platen is mounted, the combination of means for holding a worksheet to the platen, a releasably-adjustable margin-stop to limit the return movement of the carnage, a control to simultaneously release the holding means and the marginstop from an adjusted position, so that the the margin-stop to reset the same to .the ad- "position after being shifted the-reom f' 13,.l vInd-a typewritinglmachine havingaplaten-carriage, the combination ofa releasably-adustable margin-stop mounted on a 14. In apftypewriting machine'having a` carriage, tlie combination 4of a platen mountable adjustable margin-stop mounted on a `when the control acts to ed on the carriage, feed-rolls riding on the platen to hold a. work-sheet thereto, a releasably-adjustable margin-stop mounted on a' relatively stationary part of the machlneto position the carriage on its return mover ment, a control' mounted on 'the carriage to throw the feed-rolls off the platen for4 releasingthe work-sheet, andmeans to simultaneously release the margin-stop from an adjusted position, so thatl it can be shifted with the return movement ofthe carriage release.' the worksheet.

15. In a typewriting machine having a carriage,1the combination of a platen mounted on the carriage, feed-rolls riding Von the platen to hold a work-sheet thereto, a releasably-adjustable margin-stop mounted on a relatively stationary part of the .machine toposition the carriage 4on its return movement, a 'control mounted on the carriage to throw the feed-rolls ,off the platen for releasing the Work-sheet, means to simultaneously release the margin-stop from an ad- `justed position, so that it can be shifted with the return movement ofthe carriagewhen the control acts to release thev work-sheet, and spring-means acting to automatically reset the margin-stop to the adjusted positio'n after being shifted therefrom.

16. In a typewriting machine having a platen-carriage., the combination of a releasrclatively stationary part of the machine to position the carriage on its return movement, means on the carriage to release the marginstop from an adjusted" position, so 'that it can be shifted with the return movement of the carriage, and other means acting to reset the margin-sto to the adjusted position after being shifte therefrom.

l 17. In a typewriting machine having a platen-carriage, the combination of a releasable ad'ustable margin-stop mountedon a relativel position the carriage. on its return movement, and means on the carriage `to shift the margin-stop froman adjusted position during the return movement thereof.

13. In a.- typewriting machineI having a platen-carriage, the combination of a relesf y stationary part of 'the machine to iablaad'ustable margin-stopmounted on a:

relative y stationary partof the machine to positionthecarria stop fromwan adjusted position-'during the return movement thereof, and other means on itsretu'rn movement, means en the carriage to shift the margini to reset the margin-stop -to the adjusted pocarriage on its return movement, and means to automatically-shift the margin-stop in the direction of carriage movement back to an adjustedl position after being displaced therefrom.

20. In atypewriting, machine having a ln letter-feedin carriage and a platen there-V on, thecom 'inatioln of a margin-gage for the carriage, a rack. for said margin-gage,

and means for concomitantly releasingthe' work-sheet from the platen and releasing the margin-gagel from the rack, the carriage moving said margin-gage idly along the rack.

21. In a typewriting machine having' a letter-feeding carriage and a platen thereon, thecombination of a margin-gage for the carriage,- a rack for said margin-gage. 'means for concomitantly releasing the work-sheet from the platen and releasing the margingage from the rack, the carriage moving said mar nay arresting the carriage.

22. In a typewriting machine having a 11i-gage idly along the rack, and a stop letter-feeding carriage and a platen thereon,

the combination of a margin-gage for the carriage, a rack for said margin-gage, means for concomitantly releasing the work-sheet from the platen and releasing the margingage fromthe rack, the carriage movingv said marginge idly along the rack, a stop finally arrestgiiig the carriage, and a returning sprin connected to the margin-gage to move it w en the carriage moves 1n opposite direction. Y

23. In a. typewriting machine having a 3 letter-feeding carriage and a platen thereon,

the combination of aprmargm-gage .for the carriage, a rack for said margin-gage, means .for conoomitantly releasing the work-sheet from the platen and releasing the marginga y from the rack, the carriage moving sai margin-gage idly along the rack, a stop finally arrestl the carriage, a returmng spring connec to the margin-gage to move it when the carriage moves 1n o posite direction, and a stop against whi the spring returns said marginv 24. In a typewritmg machine having a letter-feeding carriage, the combination of a margin-gagefor the carriage, a rackfor said margingage,means upon said can-1a for releasi 'saidfniargin-gage f rom sai rack,

.a provided upon sind camas for said margin-gage idly along said rack, and a spring connected Ato said margingage for returning it to normal position.

25. In a typewriting machine having a letter-feeding carriage, the combination of a margin-gage for the carriage, a rack for' said margin-gage, means upon said carriage for releasing said marginLgage from sald rack, means also provided upon said carriage for moving said margin-gage idly along said rack, f spring connected to said margin-gage for returning it to normal position, and adjustable collais or sto s limiting the play of -said margin-gage an the return movement of the carriage. i

26. In a typewriting machine having a letter-feeding carriage, the combination of a returning device for said carriage, a margina e for the returning carriage, a rack for oding said margin-gage, means for releasing the margin-gage from the rack, the

carriage in its return movement moving said margin-gage idly along -the rack, and a sto finally arresting the carriage. 2%. In a typewriting' machine having a letter-feeding carriage, the combination of a` returning device for said carriage, a margina lgio ding said margin-gage, means for releasing the margin-gage from the rack, the carriage in its return movement moving said mar in-gage idlyv along the rack, a stop finay arresting the carriage, a spring returning the mar in-gage along the rack, and a stop against W 'ch the spring returns said margin-gage.

28. In a typewriting machine having a letter-feeding carriageand a platen thereon,

the combination of a margin-gage for the carriage, a rack for said margln-gage, and a bar mounted upon said carriage and extending len hwise of the4 platen and movable lateral y to release said margin-gage from said'v rack at diierent'positions in the travel of the carriage and to maintain. such release during travel of the carriage.V

l 29. In a typewriting, machine havinga ge'for the returning carriage, a rack forvy` letter-feeding carriage and a platen thereon,

the combination of a margin-gage for the carriage, a rack for said margin-gage, a bar mounted upon said carriagel and extending lengthwise of the platen. and movable laterally to release said margin-gage from said rack at diierent positions in the travel of the carriage and to maintain such release during travel of the carriage, a stop to limit the idle throw of the margin-gage ei'ected by the carriage when said gage is released by said bar,'and astop-t0 limit the return movement of the margin-gage.

31. The combination of a carriage, a l

margin-gage, a rackl therefor, a dog engaging said rack, means for releasing the margin-gage from the rack and for holding it released while the gage the, rack by the carriage,and stops limiting the -extent of movement of the margingage which is eli'ected by the carriage.

32. The combination of a carriage, a margin-gage, a rack therefor, a dog engagl.ing said rack, means for releasing the margin-gage from the rack and for .holding it released while thegage is moved idly along l)the rack by the carriage, stops limiting the extent of movementbf the margin-gage which is elfected by the carriage, and a spring returning the margin-gage at the movement of the carriage in the opposite direction.

' JESSE A; B. SMITH.

is moved idly along 

